論文 Enhancing thermoelectric properties of ScN films through twin domains

J. More-Chevalier ; U.D. Wdowik ; J. Martan ; T. Baba ; S. Cichoň ; P. Levinský ; D. Legut ; E. de Prado ; P. Hruška ; J. Pokorný ; J. Bulíř ; C. Beltrami ; T. Mori SAMURAI ORCID (National Institute for Materials Science) ; M. Novotný ; I. Gregora ; L. Fekete ; L. Volfová ; J. Lančok

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J. More-Chevalier, U.D. Wdowik, J. Martan, T. Baba, S. Cichoň, P. Levinský, D. Legut, E. de Prado, P. Hruška, J. Pokorný, J. Bulíř, C. Beltrami, T. Mori, M. Novotný, I. Gregora, L. Fekete, L. Volfová, J. Lančok. Enhancing thermoelectric properties of ScN films through twin domains. Applied Surface Science Advances. 2024, 25 (), 100674. https://doi.org/10.1016/j.apsadv.2024.100674

説明:

(abstract)

Tailoring thermoelectric properties of ScN-based materials is of vital importance for their application, particularly at high operating temperatures. Here, we report on the thermoelectric properties of the ScN layers deposited on MgO (001) substrates by the DC reactive magnetron sputtering. The microstructure of the produced thin films is examined by X-ray diffraction and atomic force microscopy, while their chemical composition and contamination by defects are determined by X-ray photoelectron spectroscopy. The effect of temperature on the phonon properties of ScN layers, having implications for their thermoelectric properties, is explored by Raman spectroscopy. The results of our experiments are confronted with those following from the first-principles studies. We find that the ScN/MgO(001) layers with twin-domain structure reveal enhanced thermoelectric properties at elevated temperature as compared to those measured for almost defect- and domain-free layers, namely, enlarged Seebeck coefficient by about 30% and over two and a half times increased figure of merit at 800 K. Therefore, structural twin domains in thin ScN film appear to be a simple and rather stable solution for the improvement of its thermoelectric properties at elevated temperatures.

権利情報:

キーワード: thermoelectric

刊行年月日: 2024-12-24

出版者: Elsevier BV

掲載誌:

  • Applied Surface Science Advances (ISSN: 26665239) vol. 25 100674

研究助成金:

  • Ministry of Education Youth and Sports of the Czech Republic SENDISO - CZ.02.01.01/00/22_008/0004596
  • Ministry of Education Youth and Sports of the Czech Republic 90254
  • Interdyscyplinarne Centrum Modelowania Matematycznego i Komputerowego UW
  • Institut de Cardiologie de Montréal
  • Czech Science Foundation 23-07228S

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.apsadv.2024.100674

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更新時刻: 2025-11-11 08:30:15 +0900

MDRでの公開時刻: 2025-11-11 08:22:14 +0900

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